402246577 has 2 divisors, whose sum is σ = 402246578. Its totient is φ = 402246576.

The previous prime is 402246541. The next prime is 402246599. The reversal of 402246577 is 775642204.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 323676081 + 78570496 = 17991^2 + 8864^2 .

It is a cyclic number.

It is not a de Polignac number, because 402246577 - 2²³ = 393857969 is a prime.

It is not a weakly prime, because it can be changed into another prime (402240577) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201123288 + 201123289.

It is an arithmetic number, because the mean of its divisors is an integer number (201123289).

Almost surely, 2^402246577 is an apocalyptic number.

It is an amenable number.

402246577 is a deficient number, since it is larger than the sum of its proper divisors (1).

402246577 is an equidigital number, since it uses as much as digits as its factorization.

402246577 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 94080, while the sum is 37.

The square root of 402246577 is about 20056.0857846191. The cubic root of 402246577 is about 738.1831353688.

The spelling of 402246577 in words is "four hundred two million, two hundred forty-six thousand, five hundred seventy-seven".